Who called from 2084434477

I used to be in the polling business, and we had to generate random numbers
to get a good sample.  Back before no call lists.

3-17-11
3 separate calls from this #, and they have called before.  IRRITATING!

Received a robocall on my cell phone at 3:35pm, 18Mar2011. Credit card scam from "Card Member Services". Don't give them any information!

I received call, don't recognize the number.

caller ID just says Idaho. Message says I should have received mail regarding reducing my credit card debt to 6.9%.  Requirement is, I must have at least $4000 of debt. Press 1 to talk to a rep. Press 3 to be removed from this special list.  What a scam!
Do not call list does not work.  Sure would like to know who they bought my number from.